煤矿安全2017，Vol.48Issue(11)：13-16,4.DOI:10.13347/j.cnki.mkaq.2017.11.004
煤岩破坏过程中的统计损伤模型研究
Study on Statistical Damage Model of Coal Rock Destruction Process
摘要
Abstract
For coal and rock properties,we make coal element strength subject to truncated normal distribution,and then introduce a variation coefficient to establish a statistical damage model applied to coal seam damage process.The results show that this model shows more reasonability in showcasing the evolution characteristics of damage.Parameters μ and δ,respectively,respond to the uniformity distribution of coal seam macro-scale failure strength and element strength;macroscpic strength is positively correlated with parameterμ,while it is negatively correlated with parameter δ.By further analysis of dimensionless macro-scale strength,we find that it's related to variation coefficient only.关键词
煤岩/统计损伤/破坏强度/变异系数/煤层气开发Key words
coal and rock/statistical damage/breaking strength/variability coefficient/coalbed methane development分类
矿业与冶金引用本文复制引用
张彪,张遂安,夏立满,王千玮,张晓冬..煤岩破坏过程中的统计损伤模型研究[J].煤矿安全,2017,48(11):13-16,4.基金项目
山西省煤基重点科技攻关资助项目(MQ2014-04) （MQ2014-04）
